High School Math Guide

Core Guide

Secondary Math II

Similarity, Right Triangle Trigonometry, and Proof

Understand similarity in terms of similarity transformations (G.SRT.1-3) Standard G.SRT.3: Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

Concepts and Skills to Master • Use similarity transformations to show that the AA similarity criterion establishes similarity for triangles. Related Standards: Current Course Related Standards: Future Courses

II.G.C.1, II.G.C.5, II.G.CO.9, II.G.CO.10, II.G.SRT.1, II.G.SRT.2, II.G.SRT.4, II.G.SRT.5, II.G.SRT.6, II.G.SRT.7, II.G.SRT.8, II.G.GPE.4, II.G.GPE.6

III.F.TF, III.G.MG.3, P.N.VM.5

Support for Teachers Critical Background Knowledge • The sum of the measures of the angles in a triangle is 180 degrees (8.G.5) • Explain criteria for triangle congruence (I.G.CO.8) Academic Vocabulary similarity, transformation, AA Resources Curriculum Resources: https://www.uen.org/core/core.do?courseNum=5620#71536

II.G.SRT.3

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